CN1728831A - Use the method and apparatus of the decoding moving picture of back filtering - Google Patents
Use the method and apparatus of the decoding moving picture of back filtering Download PDFInfo
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- CN1728831A CN1728831A CNA2005100851372A CN200510085137A CN1728831A CN 1728831 A CN1728831 A CN 1728831A CN A2005100851372 A CNA2005100851372 A CN A2005100851372A CN 200510085137 A CN200510085137 A CN 200510085137A CN 1728831 A CN1728831 A CN 1728831A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
- H04N19/423—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
- H04N19/426—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements using memory downsizing methods
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
- H04N19/513—Processing of motion vectors
- H04N19/517—Processing of motion vectors by encoding
- H04N19/52—Processing of motion vectors by encoding by predictive encoding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
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Abstract
A kind of method and apparatus to moving picture decoding is provided.The method of decoding comprises: storage is about the coded message of certain piece and adjacent block; Based on canned data, derive filter factor the border between the piece carried out filtering and to predict the motion vector of certain piece; And, filtering is carried out on the border between certain piece and the adjacent block based on the filter factor of deriving.Therefore, required amount of memory and route resource amount have been reduced.
Description
The application requires to be submitted on July 29th, 2004 priority of the 10-2004-0059740 korean patent application of Korea S Department of Intellectual Property, and this application all is disclosed in this for reference.
Technical field
Embodiments of the invention relate to a kind of method and apparatus to moving picture decoding, more particularly, relate to a kind of method and apparatus of using the decoding moving picture of back filtering.
Background technology
H.264 be a kind of new video compression standard that the compression ratio stronger than traditional standard is provided.H.264 also claim MPEG-4AVC (advanced video coding).According to standard H.264, Digital Television, PDA, web pad, mobile phone etc. all decodable code H.264 standard with playing moving images.
Decoder according to H.264 standard decoding comprises motion vector prediction unit and filter unit.The motion vector of motion vector prediction unit prediction current block.Filter unit carries out filtering so that the border between current block and adjacent piece is more not obvious to the border of current block.In standard H.264, such filtering is called as de-blocking filter.
Filter unit is derived the boundary intensity (BS) as the filter factor that is used for carrying out de-blocking filter, and determines to be fit to the Filtering Processing of the characteristics of current block.Filter unit uses the information such as the type of coding that is used for coded macroblocks, quantization parameter and adjacent macroblocks to derive BS.Filter unit carries out filtering according to the BS that derives to the border of current block.
The data entries that is used for deriving BS and motion vector prediction unit be used for motion vectors data entries (except the data entries (Fig. 3 B) that is called as nonzero coef flag) identical.
According to first traditional coding/decoding method, each all has memory motion vector prediction unit and filter unit.Motion vector prediction unit is come motion vectors with the information that is stored in its memory, and filter unit is derived BS with the information that is stored in its memory.But two information of storing in the memory of motion vector prediction unit and filter unit are identical.
Fig. 1 is the exemplary diagram that the general internal storage size that is used for deriving BS is shown.With reference to figure 1, in frame/field, public intermediate form (CIF) needs the memory of storage 5588 bits, and standard definition (SD) needs the memory of storage 11430 bits, and high density (HD) needs the memory of storage 30480 bits.In macro block adaptive frame-field coding (MBAFF), need be able to store the memory of the information of twice.MBAFF is coded in and pursues handling the right information about being made of jacking block and sole piece on the basis.
According to first traditional coding/decoding method,, be to use two memories with size shown in Figure 1 though the information that is stored in the filter unit memory is identical with information in the memory that is stored in motion vector prediction unit.That is to say to have large-sized data shown in Figure 1 and be stored in two memories (motion vector prediction unit memory and filter unit memory) redundantly.
According to second traditional coding/decoding method, the memory of filter unit is removed.And the information that motion vector prediction unit will be stored in its memory sends to filter unit.Especially, the motion vector prediction unit necessary information that will derive the BS of current block sends to filter unit.Filter unit uses the information that receives to derive BS, and carries out filtering.
In second traditional coding/decoding method, the largest amount that is sent to the data of filter unit from motion vector prediction unit is 1930 bits.Lot of data needs a large amount of hardware route resource like this.In addition, when using the macro block pipeline configuration, need to store the register of the data that will be transmitted.
As mentioned above, according to first traditional coding/decoding method, identical data are stored in two memories redundantly, and according to second traditional coding/decoding method, also need a large amount of route resource and register.
Summary of the invention
Embodiments of the invention provide a kind of dynamic image decoding method, are used for by deriving the size that filter factor reduces amount of memory and transmits data from the information that is used for motion vectors.
Embodiments of the invention also provide a kind of moving picture decoding equipment, are used for reducing amount of memory and the size that transmits data by the memory of sharing between motion vector prediction unit and the filter factor lead-out unit.
According to an aspect of the present invention, provide a kind of method to moving picture decoding.This method comprises: storage is about the coded message of certain piece and adjacent piece; Based on the coded message of storage, derive filter factor so that filtering is carried out on the border between certain piece and the adjacent piece, predict the motion vector of certain piece; And filtering is carried out on the border between certain piece and the adjacent piece based on the filter factor of deriving.
A kind of equipment of moving picture decoding is provided according to a further aspect in the invention.This equipment comprises: memory, the coded message that is used to store certain piece and adjacent piece; The memorizer information processing unit is derived and to be used for filter factor that filtering is carried out on the border between certain piece and the adjacent piece, and based on canned data prediction block motion vector; And filter unit, be used for filtering being carried out on the border between certain piece and the adjacent piece based on the filter factor of deriving by the memorizer information processing unit.
Other aspects of the present invention and/or advantage will partly be set forth in the following description, and partly become clear by describing, and perhaps can grasp by the invention practice.
Description of drawings
By the description of carrying out below in conjunction with accompanying drawing to embodiment, above-mentioned and/or other aspects of the present invention and advantage will become apparent and be easier to understand, wherein:
Fig. 1 illustrates the diagrammatic sketch of deriving the required ordinary internal memory size of boundary intensity (BS);
Fig. 2 is the block diagram of decoding device according to an embodiment of the invention;
Fig. 3 A is the diagrammatic sketch for the piece of the memorizer information processing unit use among the motion vector of predicting current block and derivation BS Fig. 2;
Fig. 3 B is the diagrammatic sketch that illustrates about the information of the piece of Fig. 3 A; And
Fig. 4 is a coding/decoding method flow chart according to another embodiment of the present invention.
Embodiment
Now, be shown in the embodiment of the invention in the accompanying drawing with describing its example in detail, wherein, identical label refers to components identical all the time.Embodiment is described with reference to the accompanying drawings to explain the present invention.
Fig. 2 is the calcspar of decoding device according to an embodiment of the invention.With reference to figure 2, decoding device comprises entropy decoding unit 210, memory 220, memorizer information processing unit 230, motion compensation units 240, intraprediction unit 250 and filter unit 260.
The piece of 210 pairs of entropy codings of entropy decoding unit carries out the entropy decoding.The entropy decoding is a kind of compression method based on the redundancy in the piece that forms image.
Fig. 3 A is the diagrammatic sketch for the piece of the memorizer information processing unit use among the motion vector of predicting current block and derivation BS Fig. 2.With reference to figure 2-3A, memorizer information processing unit 230 is predicted the motion vector of current block and is derived BS by using current block 310, the piece 320 on adjacent (adjacent) current block 310 left sides and the piece 330 at adjacent current block 310 tops.
The coded message of the piece 330 at the piece 320 on current block 310, adjacent current block 310 left sides and adjacent current block 310 tops generally is called as CurrMbAddr, MbAddrA and MbAddrB respectively.
Fig. 3 B is the diagrammatic sketch of coded message of the piece of displayed map 3A.With reference to figure 3B, MbAddrA is divided into MbAddrA (top) 340 and MbAddrA (bottom) 350 in MBAFF, and MbAddrB is divided into MbAddrB (top) 360 and MbAddrB (bottom) 370.
Fig. 3 B has shown the detailed content of MbAddrA (top) 340, MbAddrA (bottom) 350, MbAddrB (top) 360, MbAddrB (bottom) 370 and CurrMbAddr 380.The coded message of MbAddrA, MbAddrB and CurrMbAddr and other pieces is stored in the memory 220 together.
Each size of MbAddrA (top) 340, MbAddrA (bottom) 350, MbAddrB (top) 360 and MbAddrB (bottom) 370 all is 254 bits.The size of CurrMbAddr 380 is 914 bits.Therefore, the motion vector of prediction current block and the size that derives the required information of BS are 1930 bits.
With reference to figure 2, memorizer information processing unit 230 comprises motion vector prediction unit 230-1 and BS lead-out unit 230-2 again.
When the piece of entropy decoding unit 210 decoding was the piece of inter prediction, motion vector prediction unit 230-1 was with being stored in the motion vector of the information prediction current block in the memory 220, and will be used for the information of motion vectors and be sent to BS lead-out unit 230-2.BS lead-out unit 230-2 derives BS with the information that receives.
Especially, motion vector prediction unit 230-1 uses MbAddrA, the MbAddrB and the CurrMbAddr that are stored in the memory 220 to come motion vectors.In addition, BS lead-out unit 230-2 uses MbAddrA, the MbAddrB that is stored in the memory 220, and CurrMbAddr derives BS.That is, motion vector prediction unit 230-1 and BS lead-out unit 230-2 shared storage 220.
BS lead-out unit 230-2 can directly receive the information that derives the required information of BS and do not pass through motion vector prediction unit 230-1 from memory 220.
Motion vector prediction unit 230-1 and BS lead-out unit 230-2 form memorizer information processing unit 230.Memorizer information processing unit 230 is partly corresponding to the motion-vector prediction memory in traditional decoding device.
That is to say that memorizer information processing unit 230 not only can go motion vectors as what conventional motion vector prediction unit was done, but also derives BS based on the information that is stored in memory 220.Therefore, the data between motion vector store 230-1 and BS lead-out unit 230-2 transmit only needs a spot of route resource.
When the piece of entropy decoding unit 210 decodings was intra-frame prediction block, intraprediction unit 250 formed the image of current block.
The piece image that 260 pairs of piece images that form in motion compensation units 240 of filter unit and intraprediction unit 250 form carries out filtering.Here, the type of the filtering of execution is a de-blocking filter.Filter unit 260 is derived BS no longer in addition.Therefore, filter unit 260 does not need to have additional memory or receives derives the BS information necessary.
Fig. 4 is the flow chart of coding/decoding method according to an embodiment of the invention.
With reference to figure 4, memory 220 storage motion vectors and derivation BS information necessary (operation S405).The information that is stored in the memory 220 is the coded message that forms the piece of image.
Memorizer information processing unit 230 usefulness are stored in the motion vector of the information prediction current block in the memory 220 and derive BS (operation S410).Motion vector prediction unit 230-1 and BS lead-out unit 230-2 shared storage 220.Therefore, being used for many information that many information and being used for of motion vectors derive BS is stored in the memory 220.
The piece image that piece image that 260 pairs of motion compensation units of filter unit 240 form and/or intraprediction unit 250 form is carried out de-blocking filter (operation S430).Filter unit 260 is not derived BS in addition.Filter unit 260 carries out filtering based on the BS that receives from memorizer information processing unit 230.
With reference to compression standard H.264 the present invention has been described hereinbefore.But the present invention not only can be applicable to H.264 standard, also can be applicable to when moving image is decoded according to another compression standard.
In another compression standard, H.264 the BS of standard is become the corresponding filter factor of other compression standards.In addition, become the filter factor lead-out unit, and become corresponding back filtering in other compression standards according to standard de-blocking filter H.264 according to the BS lead-out unit 230-2 of standard H.264.
The present invention also can be implemented as the computer-readable code on computer-readable memory such as the recording medium.Computer-readable memory is that can store thereafter can be by the data arbitrary data storage device of computer system reads.The example of computer-readable memory comprises read-only memory (ROM), random-access memory (ram), CD-ROMs, tape, floppy disk, light data storage device and carrier wave (as the transfer of data by the internet).Computer-readable memory also can distribute on the network that connects computer system, thereby computer-readable code can be stored and carry out in the mode that distributes.
As mentioned above, the BS that carries out traditionally in filtering operation derives and motion-vector prediction is performed together, therefore allows motion vector prediction unit and BS lead-out unit to share same memory.
According to first traditional coding/decoding method, each needs independent memory motion vector prediction unit and filter unit.But, according to embodiments of the invention, only need the memory of a memorizer information processing unit, therefore reduced the quantity of memory.
In addition, because the derivation of the prediction of motion vector and BS is performed together, so the memorizer information processing unit only sends to filter unit with BS.
According to second traditional coding/decoding method, motion vector prediction unit sends necessary 1930 bits of BS of deriving current block.But according to embodiments of the invention, the memorizer information processing unit only sends 3 bit BS to filter unit.Therefore, reduced required route resource amount.
Although some embodiments of the present invention are shown and described, it should be appreciated by those skilled in the art that without departing from the principles and spirit of the present invention can make amendment in an embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (17)
1. method that moving image is decoded comprises:
Storage is about the coded message of certain piece and adjacent block;
Based on the coded message of storage, derive filter factor so that filtering is carried out on the border between certain piece and the adjacent block, and predict the motion vector of certain piece; And
Based on the filter factor of deriving filtering is carried out on the border between certain piece and the adjacent block.
2. the method for claim 1, wherein adjacent block comprises certain piece piece on limit and certain piece piece by the upper strata that keeps left.
3. the method for claim 1, wherein comprise boundary intensity (BS) and comprise de-blocking filter according to compression standard filtering H.264 according to compression standard filter factor H.264.
4. method to using a plurality of macro block compressed moving image to decode, this method comprises:
Use is stored in the motion vector of at least one macro block of information prediction in the memory; And
Information from be stored in memory derives filter factor so that filtering is carried out on the border of macro block and at least one adjacent macroblocks.
5. method as claimed in claim 4 also comprises:
Use the filter factor of deriving that filtering is carried out on the border between macro block and the adjacent macroblocks.
6. method as claimed in claim 4, wherein, described derivation is performed before operating in described predicted operation.
7. method comprises:
From the image information motion vectors;
Derive filter factor from image information; And
Use filter factor to come filtering.
8. method as claimed in claim 7 wherein, during the prediction that is used for image information and deriving, is visited same memory.
9. method comprises:
During the derivation of the prediction of motion vector and filter factor, the shared storage content; And
Use filter factor filtering.
10. equipment to moving picture decoding comprises:
Memory, the coded message that is used to store certain piece and adjacent block;
The memorizer information processing unit is used for the coded message based on storage, derives filter factor so that filtering is carried out on the border between certain piece and the adjacent block, and predicts the motion vector of certain piece; And
Filter unit is used for based on the filter factor of being derived by the memorizer information processing unit filtering being carried out on the border between certain piece and adjacent block.
11. equipment as claimed in claim 10, wherein, the memorizer information processing unit comprises:
Motion vector prediction unit is used for predicting based on the memory canned data motion vector of certain piece; And
The filter factor lead-out unit is used for being stored in the information of memory and deriving filter factor based on the information that receives from the motion vector prediction unit reception.
12. the equipment to using the macro block compressed moving image to decode comprises:
Memory, the coded message that is used to store certain piece; And
In conjunction with filtering and motion vector prediction unit, be used for deriving filter factor and predicting the motion vector of certain piece based on the coded message of storage.
13. equipment as claimed in claim 12, wherein, memory is also stored the coded message of at least one adjacent block, and wherein, filter factor is used to filtering is carried out on the border between certain piece and the adjacent block.
14. the equipment to using the macro block compressed moving image to decode, this equipment comprises:
Motion vector prediction unit is used for predicting one motion vector of piece;
Filter unit is used for filtering is carried out on the border between piece and at least one adjacent block; And
Memory is used to comprise the coded message of piece, wherein
At least in motion vector prediction unit and filter unit, share the information that from coded message, derives.
15. equipment as claimed in claim 14, wherein, motion vector prediction unit and filter unit form the memorizer information processing unit.
16. equipment as claimed in claim 14, wherein, motion vector prediction unit derives boundary intensity and provides boundary intensity to be used as filter factor to filter unit from coded message.
17. a computer-readable memory that is used for controlling according to the method for decoding moving picture computer, this method comprises:
Store the coded message of certain piece and adjacent block;
Based on the coded message of storage, derive filter factor so that filtering is carried out on the border between certain piece and the adjacent block, and predict the motion vector of certain piece; And
Based on the filter factor of deriving filtering is carried out on the border between certain piece and the adjacent block.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040059740 | 2004-07-29 | ||
| KR1020040059740A KR100644620B1 (en) | 2004-07-29 | 2004-07-29 | Method and apparatus for decoding moving picture which post filtering is applied |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1728831A true CN1728831A (en) | 2006-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100851372A Pending CN1728831A (en) | 2004-07-29 | 2005-07-20 | Use the method and apparatus of the decoding moving picture of back filtering |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20060023791A1 (en) |
| EP (1) | EP1641280A3 (en) |
| KR (1) | KR100644620B1 (en) |
| CN (1) | CN1728831A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105163118A (en) * | 2010-07-20 | 2015-12-16 | Sk电信有限公司 | Method for decoding video signals |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100763914B1 (en) * | 2006-05-10 | 2007-10-05 | 삼성전자주식회사 | Method and apparatus for recording of image data for access of a memory with high speed |
| KR100819289B1 (en) | 2006-10-20 | 2008-04-02 | 삼성전자주식회사 | Deblocking filtering method and deblocking filter for video data |
| KR100827106B1 (en) * | 2006-10-20 | 2008-05-02 | 삼성전자주식회사 | Apparatus and method for discriminating filter condition region in deblocking filter |
| US20090245351A1 (en) * | 2008-03-28 | 2009-10-01 | Kabushiki Kaisha Toshiba | Moving picture decoding apparatus and moving picture decoding method |
| CA2728774A1 (en) * | 2008-06-26 | 2009-12-30 | Casella Waste Systems, Inc. | Engineered fuel feed stock |
| US20100111166A1 (en) * | 2008-10-31 | 2010-05-06 | Rmi Corporation | Device for decoding a video stream and method thereof |
| TWI463878B (en) * | 2009-02-19 | 2014-12-01 | Sony Corp | Image processing apparatus and method |
| KR101700358B1 (en) | 2009-12-09 | 2017-01-26 | 삼성전자주식회사 | Method and apparatus for encoding video, and method and apparatus for decoding video |
| USRE47243E1 (en) | 2009-12-09 | 2019-02-12 | Samsung Electronics Co., Ltd. | Method and apparatus for encoding video, and method and apparatus for decoding video |
| WO2014095120A1 (en) * | 2012-12-20 | 2014-06-26 | Robert Bosch Gmbh | Piston fuel pump for an internal combustion engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6215425B1 (en) * | 1992-02-19 | 2001-04-10 | Netergy Networks, Inc. | Deblocking filter for encoder/decoder arrangement and method with divergence reduction |
| EP1351511A3 (en) * | 2002-04-01 | 2005-08-10 | Broadcom Corporation | Method of communicating between modules in a video decoding system |
| JP4699685B2 (en) * | 2003-08-21 | 2011-06-15 | パナソニック株式会社 | Signal processing apparatus and electronic apparatus using the same |
-
2004
- 2004-07-29 KR KR1020040059740A patent/KR100644620B1/en not_active IP Right Cessation
-
2005
- 2005-07-20 EP EP05254493A patent/EP1641280A3/en not_active Withdrawn
- 2005-07-20 CN CNA2005100851372A patent/CN1728831A/en active Pending
- 2005-07-27 US US11/189,856 patent/US20060023791A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105163118A (en) * | 2010-07-20 | 2015-12-16 | Sk电信有限公司 | Method for decoding video signals |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060023791A1 (en) | 2006-02-02 |
| EP1641280A2 (en) | 2006-03-29 |
| KR20060011069A (en) | 2006-02-03 |
| KR100644620B1 (en) | 2006-11-10 |
| EP1641280A3 (en) | 2006-05-17 |
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